#HTE

Remember that blurry first-ever photo of a black hole? Turns out snaps like that can tell us a lot about these matter-gobbling voids

Watch how layers of photon rings reveal things like spin and mass

Vid  Scientists may be able to calculate a black hole’s mass and rotation from photographs alone one day, according to research published in Science Advances.…

https://go.theregister.co.uk/feed/www.theregister.co.uk/2020/03/19/black_hole_pics/